Our new Weatherproof bags are made with a proprietary leather that’s vegetable-tanned by Wickett & Craig, the 150-year-old Pennsylvania tannery that makes our Bridle Leather. We worked with our longtime partner to develop this special boot-grade leather that is weather- and salt water-resistant, then added solid brass hardware and felt-lined shoulder straps so that the bag on your back on your arm is as tough as the boots on your feet. Modeled after our most popular briefcase, this bag features a wool-felt shoulder strap for comfort and security and two internal dividers to keep tools and electronics separate.